Lucifer.

The story of Lucifer is well known, the angel who defied God and was banished to hell.

But before falling to hell he spent a part of his life on Earth, with humans, where he found love, living as a human so he could be with the human who had stolen his heart, when this human died of old age Lucifer was left empty inside, sinking into a depression that made him retreat into his castle.

The human was reincarnated after centuries, as a little demon in hell, when Lucifer found out about it, he didn't hesitate for a second to look for her, taking care of her and trapping her in the castle walls, waiting for her to grow up so he could spend his life with his only love.

-don't run around there...

Lucifer commented as he chased the girl through the castle corridors.